The CS20 Dual-Resolution 3D TOF LiDAR (Model: EPI7072) uses Time-of-Flight (ToF) technology to capture precise 3D spatial data. Equipped with a 640×480 resolution sensor, it measures distances up to 5 meters with millimeter-level accuracy while consuming just 1.2W power. Its compact design (48×34×12mm) and USB Type-C interface enable seamless integration into robotics, security systems, and interactive applications across Linux, Windows, ROS, and Android platforms
Key Advantages vs. Alternatives
| Feature | CS20 ToF LiDAR | 3D Structured-Light Cameras |
|---|---|---|
| Blind Spot | <10cm (minimal dead zone) | Larger blind zones (~20-30cm) |
| Accuracy | ±1% error (linear, distance-invariant) | Accuracy degrades with distance |
| Speed | Up to 30fps (real-time depth maps) | Slower due to pattern processing |
| Environment | Works in darkness/sunlight | Struggles in strong ambient light |
| Cost Efficiency | Lower price (vs. high-end ToF) | Higher cost for similar resolution |
✅ Technical Insight:
CS20 uses indirect ToF (iToF) with 940nm VCSEL illumination, balancing power efficiency and sunlight immunity
. Its dual-resolution mode (640×480 or 320×240) adapts to bandwidth needs
Figure: 3D Point Cloud Images for Resolution Comparison
Figure: Close-up View of 3D Point Cloud Image (640*480)
Figure: 3D Point Cloud Image in Dark Environment (Drawer)
Working Principle
A Brief Analysis of the Principles of Depth Cameras: Structured Light, TOF, and Stereo Vision
Applications
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Robot SLAM: High-speed mapping for navigation (e.g., warehouse bots)
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Face Recognition: Anti-spoofing with depth-based liveness detection.
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Volume Measurement: ±1% accuracy for logistics/warehouse management
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Security Monitoring: People counting + intrusion alerts in low-light areas.
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Somatosensory Interaction: Gesture control for AR/VR interfaces.
Specifications
| Category | Details |
|---|---|
| Model | CS20 (EPI7072) |
| Depth Resolution | 640×480 (HQ) / 320×240 (Fast) |
| Range | 0.1–5m (indoor, 90% reflectivity) |
| Accuracy | ±1% (e.g., ±5mm @0.5m) |
| FOV | 60° (H) × 45° (V) |
| Power | 5V/0.5A (1.2W avg.), USB Type-C |
| Frame Rate | Up to 30fps |
| Laser Safety | Class 1 (eye-safe) |
| Operating Temp. | -10°C to 50°C |
| Output Data | Depth maps, point clouds, amplitude via SDK |
Advantages
- Precision: Millimeter-level accuracy for industrial metrology
- Compactness: 48mm² footprint fits drones/embedded devices.
- Low Power: 1.2W avg. enables battery-powered operation.
- Plug-and-Play: Pre-calibrated + Python SDK for rapid prototyping.